GoT has a history of pulling out the big guns for the ninth episode of a given season, and Kit Harington - who plays Jon Snow on the series - says season 4 is no exception and the upcoming throwdown between wildlings and Night's Watchmen will make the Battle of Blackwater Bay look like a Joffrey vs. Tyrion slap fight.

"I think it's as big as Thrones has gone at the moment," says Harington. "I think it's no secret that it's the most expensive episode they've ever made and a lot of that is due to CGI."

We won't go into spoiler territory by speculating as to where those CGI dollars may have been spent but HBO's preview of the episode (which you can watch above) showed a brief glimpse of some wildling giants, and their feet alone looked terrifying.

"I think it's as big as TV gets," says Harington with regard to the much-anticipated scene.

So yeah, even if you're still traumatized from Oberyn's crushing headache (we don't blame you), be sure not to miss the penultimate episode of season 4 this Sunday. It should be a doozy.